Videoswitch VDM - Manual (Page 48)

Videoswitch
VDM Digital Recorder
Vdm601t.doc
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10.4.2.3 Activity Enable/Disable
Activity detection is be enabled for particular times of day, for each day of the week
Examples:
•
All day, enter:
00:00 23:59
• Typical Working Hours (08:30 to 17:30), enter: 08:30 17:30
• Morning and evening (00:00 to 08:30 and 17:30 to 00:00), enter: 17:30 08:30
10.4.2.4 Daytime
The Daytime timer allows the spot monitor to change camera and/or start/stop sequencing at particular times
of day. Refer to the Power-Up Options (section 10.2.5) for Day and Night settings for the Spot Monitor.
Examples:
•
All day, enter:
00:00 23:59
• Typical Working Hours (08:30 to 17:30), enter: 08:30 17:30
• Morning and evening (00:00 to 08:30 and 17:30 to 00:00), enter: 17:30 08:30
10.4.3 Record Settings
In many applications, the only record setting you need to specify is the Image Retention period (system
default is 31 days). This specifies how long images are kept before being over-written by new ones. Note
that Recording Enabled must be set to YES.
There are three possible recording states. Each of these has its own settings, so the cameras that are
recorded, the image quality and update rate may all be controlled according to time of day and alarm
conditions.
The recording states are:
• Normal
• Custom
• Alarm
10.4.3.1 Normal Mode
10.4.3.1.1 Image Retention (Days)
Image will be retained for this number of days. If two drives are used, they will be recorded onto alternately.
This setting is, in most installations, the most important. Unlike most other digital recording systems, this
equipment works out the frame rate automatically in order to achieve the specified number of days
recording.
If Custom record periods are set (section 10.4.2.1), this will be allowed for when the system calculates the
normal update rate required to ensure that the image retention period is attained. Similarly, if storage space
is allocated for alarms (section 10.4.3.3.5), this will be allowed for.
Note that the Image Retention period is a target that the system aims for rather than an exact figure and
may vary slightly depending on alarms and picture compression details. Check the Image information screen
(section 9.2) for the current true status.
10.4.3.1.2 Cameras
This list determines which camera will be recorded in Normal recording periods. If inputs have no video, they
will not be recorded, so normally this option should have all cameras turned on.
If you only wish to record only during Custom time periods or only when activity occurs, turn off all the
cameras in the Normal settings.
10.4.3.1.3 Quality
The quality (image size) of each camera may be set here for Alarm and Activity recording conditions. Lower
image sizes will enable faster update for a given image retention period.
The image size (in Kbytes) is displayed on this menu screen. Note that it may take a few seconds to reach
its target value.